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All results from a given calculation for CH3CO (Acetyl radical)

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-153.161706
Energy at 298.15K-153.163987
HF Energy-153.161706
Nuclear repulsion energy62.985831
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at mPW1PW91/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3156 3025 8.47      
2 A' 3047 2920 6.87      
3 A' 1948 1867 168.76      
4 A' 1427 1367 23.56      
5 A' 1329 1274 15.87      
6 A' 1046 1003 15.56      
7 A' 890 853 2.82      
8 A' 466 446 5.84      
9 A" 3162 3030 0.53      
10 A" 1424 1364 12.91      
11 A" 937 898 0.00      
12 A" 117 112 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 9473.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 9078.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/aug-cc-pVDZ
ABC
2.84147 0.33258 0.31520

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.966 -0.659 0.000
C2 0.000 0.489 0.000
O3 1.183 0.473 0.000
H4 -0.442 -1.625 0.000
H5 -1.611 -0.568 0.882
H6 -1.611 -0.568 -0.882

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6
C11.50052.42861.09871.09671.0967
C21.50051.18262.15902.11902.1190
O32.42861.18262.65273.10883.1088
H41.09872.15902.65271.80641.8064
H51.09672.11903.10881.80641.7648
H61.09672.11903.10881.80641.7648

picture of Acetyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 129.308 C2 C1 H4 111.396
C2 C1 H5 108.346 C2 C1 H6 108.346
H4 C1 H5 110.734 H4 C1 H6 110.734
H5 C1 H6 107.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.390      
2 C 0.043      
3 O -0.347      
4 H -0.096      
5 H 0.005      
6 H 0.005      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.209 -1.460 0.000 2.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.187 0.049 0.000
y 0.049 -18.891 0.000
z 0.000 0.000 -17.087
Traceless
 xyz
x -1.199 0.049 0.000
y 0.049 -0.754 0.000
z 0.000 0.000 1.953
Polar
3z2-r23.905
x2-y2-0.296
xy0.049
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.233 0.359 0.000
y 0.359 4.573 0.000
z 0.000 0.000 3.562


<r2> (average value of r2) Å2
<r2> 44.328
(<r2>)1/2 6.658